This is the factory service compilation Cat dealers used on the 236, 246 and 248 skid steers - bound from the separate engine, interlock ECM, hydraulic, power train and machine systems publications, so it also carries the shared sections for the wider 216 to 262 loader family. You get foldout electrical and hydraulic schematics (the 248 has its own hydraulic sheet, RENR2890), full engine work from compression testing (2450 to 2950 kPa at 250 rpm) to valve lash (0.35 mm cold), the hydrostatic pumps and motors, tandem drive and axles, pilot hydraulics with actual cylinder speed test times, the seat and armrest interlock system, fuel injection testing, and torque specs down to face seal fittings. Remove and install procedures and troubleshooting throughout.
Other edition of this manual
What's Inside This Caterpillar 236, 246, 248 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Schematic | 1-26 | Electrical System Schematics, Hydraulic System Schematics, Component Location, Machine View |
| Air Inlet and Exhaust System | 27-51 | Turbocharger, Exhaust Manifold, Inlet Manifold, Muffler |
| Basic Engine | 52-350 | Finding Top Center Position, Compression Test, Engine Valve Lash Inspect and Adjust, Connecting Rod Bearings, Valve Guide Inspect, Gear Group Timing |
| Cooling System | 351-465 | Water Temperature Regulator Test, Radiator and Hydraulic Oil Cooler, Engine Oil Cooler, Fan Motor, Overheating Checks |
| Electrical and Starting System | 466-1579 | Electronic Control Module, Engine Start Interlock, Hydrostatic System Interlock, Work Tool Interlock, Solenoid Valve, Relays, Diagnostic Operation |
| Engine Arrangement | 1580-1754 | Engine Design, Engine Remove and Install, Troubleshooting |
| Frame and Body | 1755-1780 | Loader Frame, Engine Enclosure Remove and Install |
| Fuel System | 1781-1910 | Governor Control, Fuel Injection Nozzle Test, Fuel Injection Timing Check, Fuel Setting Adjust, Air in Fuel Test, Fuel System Prime |
| Hydraulic System | 1911-2454 | Pilot Hydraulic System, Pilot Valve Joystick, Bank Valve, Interlock Manifold Valve, Diverter Valve |
| Implements | 2455-2511 | Work Tool Control, Lift Arms Remove and Install |
| Lubrication System | 2512-2549 | Engine Oil Pump Inspect, Engine Oil Filter Base, Engine Oil Relief Valve, Crankcase Breather, Excessive Oil Consumption Checks |
| Machine Arrangement | 2550-2561 | Service Intervals, Heating and Air Conditioning Service |
| Operator Station | 2562-3182 | Switches, Indicators, Sensors, Air Conditioning System, Refrigerant Identification, Pilot Valve Joystick |
| Power Train | 3183-3410 | Piston Pump Hydrostatic, Piston Motor Hydrostatic, Tandem Drive, Axle, Hydrostatic System Troubleshooting |
| Service Equipment and Supplies | 3411-3429 | Cab Pressurization and Filtration, Manifold Gauge Set, Fuel Filter Base, Required Tools |
| Torque Specifications | 3430-3477 | Metric Fasteners, Inch Fasteners, Ground Engaging Tool Fasteners, Fitting Installation, Face Seal Fittings |
| Work Tools | 3478-3486 | Quick Coupler, Coupler Cylinder, Quick Coupler Remove and Install |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder Compression Pressure | 2450 to 2950 kPa at 250 rpm | p. 71 |
| Max Cylinder Compression Variation Between Cylinders | 350 kPa (51 psi) | p. 71 |
| Valve Lash Setting, Cold Engine (Inlet and Exhaust) | 0.35 mm (0.014 inch) | p. 74 |
| Timing Gear Backlash, Max Allowable | 0.25 mm (0.010 inch) | p. 68 |
| Fuel Injection Nozzle Back-Leakage Time | 5 to 45 seconds | p. 64 |
| Hydraulic Oil Test Temperature | 50 ± 10°C (122 ± 18°F) | p. 2055 |
| Lift Cylinder Speed, Raise (236/246) | 2.7 ± 0.2 seconds | p. 2056 |
| Lift Cylinder Speed, Lower (236/246) | 2.7 ± 0.2 seconds | p. 2056 |
| Lift Cylinder Speed, Float (236/246) | 2.8 ± 0.2 seconds | p. 2056 |
| Tilt Cylinder Speed, Tilt Forward (236/246) | 2.1 ± 0.2 seconds | p. 2057 |
| Tilt Cylinder Speed, Tilt Back (236/246) | 1.6 ± 0.2 seconds | p. 2057 |
| Charge Circuit Max Fill Pressure | do not exceed 4000 kPa (580 psi) | p. 2075 |
| Work Tool Main Relief Valve Adjustment (per 1.5 turns clockwise) | +13500 kPa (1960 psi) | p. 2095 |
| Engine Speed, Low Idle (248) | 1000 ± 50 rpm | p. 3233 |
| Engine Speed, High Idle (248) | 2900 ± 50 rpm | p. 3233 |
| Engine Stall Speed (228 and 248) | 2200 ± 500 rpm | p. 3244 |
| MA Pressure, Stall Test (228 and 248) | 38200 ± 2000 kPa (5540 ± 290 psi) | p. 3244 |
| Brake Pressure, Disengaged (228 and 248) | 2900 ± 100 kPa (420 ± 14 psi) | p. 3249 |
| Max Displacement Adjustment Locknut Torque | 22 N·m (16 lb ft) | p. 3250 |
